I'm interested in where you ended up on your 67.5 S2? I've been looking on the site to see if I could find it on my own, but no luck. Due to my work situation I don't get to ski a lot. Last set was early May. Since then I've lost 30# so I'm probably a little light for this ski (185#). But anyways, I really like the performance of this ski. I've found that with my weight I've migrated to: Front boot 29 7/8, Length 6.904-6.914', Depth 2.482-2.485, DFT .719-.722.
At these settings the turns are symmetrical, the ski is plenty fast and ski's wide and up course. The only problem I'm having is that with my depth, I've been blowing out the tail of the ski at -35 @ 34 mph on my heel side/off side turn (rff).
Tomorrow I'm going to try more of a stock setting just for a sanity check except a DFT of .722
Thanks in advance!